Home / 9,138.14-13,698.96-3,290.63

Finding the Fourth Proportional to 9,138.14, 13,698.96 and 3,290.63

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Solution

The fourth proportional to 9,138.14, 13,698.96 and 3,290.63 is: 4,932.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,138.14 : 13,698.96 = 3,290.63 : x
  2. Step 2: Convert to fraction form
    9,138.14/13,698.96 = 3,290.63/x
  3. Step 3: Cross multiply
    9,138.14x = 13,698.96 × 3,290.63
  4. Step 4: Simplify right side
    9,138.14x = 45,078,140.25
  5. Step 5: Solve for x
    x = 45,078,140.25/9,138.14
  6. Step 6: Final answer
    x = 4,932.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.